USA 253, 40099
Orbit data source: Space-Track
USA 253, 40099 is a payload satellite owned by USAF AFSPC (US) in GEO that was launched on Mon, 28 Jul 2014 UTC via a DELTA 4M+(4,2) launch vehicle from the Air Force Eastern Test Range (AFETR). Payload-class satellites include a variety of spacecraft equipped with specific instruments for various scientific and technological missions. These include communications satellites like Starlink; space stations such as the ISS; scientific satellites like the Hubble; Earth observation satellites from companies like Planet Labs, Umbra, and HawkEye 360; GPS; miniature CubeSats for education and research; and military/defense satellites.
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40099 intel report (Beta)
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Identifier
Orbit
Country
USRelated business
Manufacturer
OSC
Mission
Non-operational Defense Classified
Bus & Motor
GEOSTAR-1, AOCS
Mass
500 kg wet, 500 kg dry
Launch date (UTC)
Launch vehicle
Launch site
Object type
Shape & HBR
Box + 2 Pan, 2.5 m
Radar Cross Section
7.621 m²
Expand to show TLE details & historyLast TLE update: 3 days ago
TLE from 3 days ago
0 USA 253
1 40099U 14043A 26170.34784822 -.00000104 00000-0 00000+0 0 9993
2 40099 5.5080 75.2227 0002726 76.7236 179.6388 0.96773503 27387Epoch: 2026-06-19T08:20Z
TLE epoch observation values (Epoch: 2026-06-19T08:20:54.086Z)
Latitude
-5.3724°
Longitude
-61.2596°
Altitude
36,808.852 km
Speed
3.038 km/s
True Right ascension
22h 06m 10s
True Declination
-5° 22' 02"
Sunlit
Visualization orbit readout
Latitude
Unknown
Longitude
Unknown
Altitude
Unknown
Speed
Unknown
Apparent Right ascension
Unknown
Apparent Declination
Unknown
Sunlit
Visualization observer readout
Local Sidereal Time
21:40:01
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
36,809.518 km
Perigee altitude
36,785.979 km
Semi-major axis
43,175.885 km
Eccentricity
0.00027
Inclination
5.508°
RAAN
75.2227°
Arg. of periapsis
76.7236°
True anomaly
179.639°
Mean anomaly
179.6388°
Eccentric anomaly
179.6389°
Mean motion
0.24193 °/min
Orbital period
1,488.06 mins
BSTAR
0
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Other satellites on launch #43 in the year 2014 (2014-07-28 UTC)
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You can import UDL-sourced sensor .json files into the Sandbox to generate a visibility chart that accounts for multi-vendor sensor geometry.USA 253 Visibility forecast
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Span | Click to sort rows by Start time (UTC) header in descending order | Start Az. | Max El. time (UTC) | Max El. Az. | Max El. | End time (UTC) | End Az. |
|---|---|---|---|---|---|---|---|
| 1440 mins | 2026-06-22 10:37:58.520Z | 173.202° S | 2026-06-23 00:05:58.520Z | 183.76° SSW | 37.508° | 2026-06-23 10:37:58.520Z | 190.908° SSW |
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40099 neighbors
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Co-orbital & Co-planar RSOs
Thresholds — Semi-major Axis: ±100 km, RAAN: ±3°, Inclination: ±5°
TCA is derived from TLE conjunctions
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CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings
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